I'm considering switching my boat Outdrive to a synthetic this year. The demos of Schaefers always show it climbing up gears or blender beaters. Is this fair or even important in a gearcase that's 100% full of gear lube? One example was showing Shaefer against Amsoil marine gear lube and I'm not sure I was fully understanding the comparison. Anyone that can provide some further info I would greatly appreciate the insight. P.S. I check my outdrive lube level on each outting..
Amsoil gear vs. Shaefer
- Thread starter AndrewT
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Andrew,
I faced this same exact situation the other day, with the exception it was on my outboard. I had a choice of full 75W90 full synthetic or Schaeffer's 80W90, both on hand.
The problem for me was this, the water temp here right now is about 39 degrees and I had just run my boat over 13 miles and when I loaded the boat and felt the lower unit it was cool, not even warm. So when I got home I got out both bottles of gear lube, and shook them. I opted to put the full synthetic in the lower unit. My reasoning is that I operate at times when I have had to go through ice in some protected bays and over 92 water temp in the summer. So yes, I will use the full synthetic year round in my lower units, one is a 60 hp, one is a 90 and the other is a 200 EFI Mercury.
I am a Schaeffer's fan, but in this case I opted to go full synthetic. JMO
I faced this same exact situation the other day, with the exception it was on my outboard. I had a choice of full 75W90 full synthetic or Schaeffer's 80W90, both on hand.
The problem for me was this, the water temp here right now is about 39 degrees and I had just run my boat over 13 miles and when I loaded the boat and felt the lower unit it was cool, not even warm. So when I got home I got out both bottles of gear lube, and shook them. I opted to put the full synthetic in the lower unit. My reasoning is that I operate at times when I have had to go through ice in some protected bays and over 92 water temp in the summer. So yes, I will use the full synthetic year round in my lower units, one is a 60 hp, one is a 90 and the other is a 200 EFI Mercury.
I am a Schaeffer's fan, but in this case I opted to go full synthetic. JMO
Andrew ,
The gear oils that use the tackifier that climbs stop the climbing effect at around 120f or so . These types are usually hugely thick at lower temps and HP killers along with fuel mileage in smaller vehicles with low power output in colder climates or conditions .
I use synthetic Pennzoil in my Mercury lower unit FWIW .
EDIT:
I believe these tackifiers are the same Bright Stock used in the very thick Lucas Oil stuff with possible minute difference. I could be wrong though .
[ January 06, 2004, 07:15 AM: Message edited by: Motorbike ]
The gear oils that use the tackifier that climbs stop the climbing effect at around 120f or so . These types are usually hugely thick at lower temps and HP killers along with fuel mileage in smaller vehicles with low power output in colder climates or conditions .
I use synthetic Pennzoil in my Mercury lower unit FWIW .
EDIT:
I believe these tackifiers are the same Bright Stock used in the very thick Lucas Oil stuff with possible minute difference. I could be wrong though .
[ January 06, 2004, 07:15 AM: Message edited by: Motorbike ]
Believe it or not, when I launch in the winter, the ramp and cove can be covered with very thin ice for quite aways. Then when we hit the open water it is on to our crappie fishing hole about 2 miles away. I fish year around here. It is either fish or do honey-do's.
[ January 06, 2004, 03:12 PM: Message edited by: 59 Vetteman ]
My oldest OutDrive is a 1969 Mercruiser Type II Rock Crusher. This out drive hold 6 quarts of Gear Lube and has no waterpump. The engine feeds from an external belt drive waterpump. My uncle bought the boat new and for years used a Texaco Meropa gear lube, I switch to the Quicksilver green stuff about 4 years ago and I'm all used up and need to restock...
I think I'll try the Amsoil Marine Gear Lube this year....and report back on my experiences...
I think I'll try the Amsoil Marine Gear Lube this year....and report back on my experiences...
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